Abstract
The widespread agricultural problem of pre-harvest sprouting (PHS) could potentially be overcome by improving seed dormancy. Here, we report that miR156, an important grain yield regulator, also controls seed dormancy in rice. We found that mutations in one MIR156 subfamily enhance seed dormancy and suppress PHS with negligible effects on shoot architecture and grain size, whereas mutations in another MIR156 subfamily modify shoot architecture and increase grain size but have minimal effects on seed dormancy. Mechanistically, mir156 mutations enhance seed dormancy by suppressing the gibberellin (GA) pathway through de-represssion of the miR156 target gene Ideal Plant Architecture 1 (IPA1), which directly regulates multiple genes in the GA pathway. These results provide an effective method to suppress PHS without compromising productivity, and will facilitate breeding elite crop varieties with ideal plant architectures.
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Claims 9
Claim · model-written summary
Mutations in one MIR156 subfamily enhanced seed dormancy.
- Taxon
- rice
Oryza sativat0e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“mutations in one MIR156 subfamily enhance seed dormancy and suppress PHS with negligible effects on shoot architecture and grain size”
Claim · model-written summary
Mutations in one MIR156 subfamily suppressed preharvest sprouting.
- Taxon
- riceOryza sativat0e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“mutations in one MIR156 subfamily enhance seed dormancy and suppress PHS with negligible effects on shoot architecture and grain size”
Claim · model-written summary
Mutations in one MIR156 subfamily had negligible effects on shoot architecture and grain size.
- Taxon
- riceOryza sativat0e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“mutations in one MIR156 subfamily enhance seed dormancy and suppress PHS with negligible effects on shoot architecture and grain size”
Claim · model-written summary
Mutations in another MIR156 subfamily modified shoot architecture.
- Taxon
- riceOryza sativat0e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“mutations in another MIR156 subfamily modify shoot architecture and increase grain size but have minimal effects on seed dormancy”
Claim · model-written summary
Mutations in another MIR156 subfamily increased grain size.
- Taxon
- riceOryza sativat0e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“mutations in another MIR156 subfamily modify shoot architecture and increase grain size but have minimal effects on seed dormancy”
Claim · model-written summary
Mutations in another MIR156 subfamily had minimal effects on seed dormancy.
- Taxon
- riceOryza sativat0e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“mutations in another MIR156 subfamily modify shoot architecture and increase grain size but have minimal effects on seed dormancy”
Claim · model-written summary
mir156 mutation enhanced dormancy through IPA1 de-repression and GA pathway suppression.
- Taxon
- riceOryza sativat0e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“mir156 mutations enhance seed dormancy by suppressing the gibberellin (GA) pathway through de-represssion of the miR156 target gene Ideal Plant Architecture 1 (IPA1), which directly regulates multiple genes in the GA pathway”
Claim · model-written summary
IPA1 directly regulates multiple GA pathway genes.
- Taxon
- riceOryza sativat0e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“mir156 mutations enhance seed dormancy by suppressing the gibberellin (GA) pathway through de-represssion of the miR156 target gene Ideal Plant Architecture 1 (IPA1), which directly regulates multiple genes in the GA pathway”
Claim · model-written summary
The authors present the mutations as a way to suppress PHS without reducing productivity.
- Taxon
- riceOryza sativat0e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“These results provide an effective method to suppress PHS without compromising productivity”
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